Power supply



FIG. 1 is a front elevation view of a power supply showing my new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a perspective view thereof; and,

FIG. 8 is another perspective view thereof.

The broken lines in the drawings are for the purpose of illustrating portions of the power supply that form no part of the claimed design. 

CLAIM The ornamental design for a power supply, as shown and described. 